The ASTM F3004-13 (2020) standard test method evaluates the mass and integrity of Encasement and article sealing using airborne ultrasound technology. By passing ultrasonic signals through the sealing area, this method is able to detect areas with poor sealing, as these areas can impede the transmission of ultrasound. This method provides a quantitative, non-subjective way of evaluating a wide range of materials and Encasements, including flexible bags and rigid pallets. Testing can be performed in the laboratory or online real-time inspection can be achieved. This standard places particular emphasis on the impact of differences in acoustic Impedance on the detection of sealing defects, providing a reliable means for quality control of Encasement sealing.
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